Pressure regulator



' O;t.12,192s., 1,503,112

A. F. JENKINS PRESSURE REGULATOR Filed Dec. 8. 1924 Patented 12, 19 2 PATEN OFFICE;

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Application filed members, 1924. serial mi. 754,620.

The present invention relates to pressure regulators and particularly to pressure regulating attachments for high pressure gas supply tanks whereby the'flow of gas 2 from a storage tank to a point of consumption is automatically maintained at a g1ven,

' held 1n place 1n the member 23 by a threaded sufiiciently low, pressure.

In my Patent No.1,488,007, dated March 25,1924, a pressure regulator of this type is disclosed and claimed,and the present invention comprises an improvement upon the 're ulator disclosed in that application, certam of the details of construction being so changed, however, that the resulting structure is more sensitive, positive in its action, and durable than the regulator first developed. A. regulator of the improved'type is illustrated in the accompanying drawings, in which? I Figure 1 is a longitudinalsectional vlew of the regulator, taken on the line 1-1 of Figure 2;

Figure 2 is a section on line of Fig-- ure 1, and

3 1s a section on the line 3 -3 of Figure 1.

My improved regulator is formed of three principal parts, a main portion or body 10,

a top 11, and a bottom piece 12, detachably secured together. The top 11 is in the form of a shell which is screwed over the body 10. and the cup-shaped bottom 12 is screwed over a depending boss 13 formed integrally with the body 10. v

A' cylindrical recess in boss 13 is closed by cup 12, thereby forming a high pressure chamber 14.

The low pressure chamber 15 is formedby a shallow recess in the top of body 10, closed on the upper side by a flexible diaphragm .16. "A passagel7 serves to connect the high and low pressure chambers. An inlet conduit 18 communicates with the high pres-- sure chamber, and an outlet-conduit 19 conducts the gas from the low pres ure cham ber. Additional-conduits 20and 21 are provided communicating with the high and low pressure. chambers respectively, to which suitable gauges may be connected. Each of these conduits is threaded at itsouter end for the attachment of suitable pipe connections. a

The passage 17 is formed in part in the 7 body 10, and in part in a nozzle 22 threaded to the member 10 and extending downward axially of the high pressure chamber. A;

longitudinally slidable valve carrying member 23 ismounted in the cylindrical recess forming the high pressure chamber, and carri'es at its upper end a cylindrical t'alve' the lower end-of the nozzle 22, and which is plug 25.v The ends of the member 23 are formed as squares having rounded ends 'which bear against the cylindrical wall of the chamber 14,. the intermediate portion being cut away to a cylindrical shape, thereby reducing the friction between the mem-- 'ber andthe cylindrical wall. A cylindrical recess is formed in the lower end of the member 23-to accommodate one end of a spring26, the other end of which bears against the cup 12. The valve member 24 is thereby yieldingly urged against the seat of the nozzle 22. A washer 27 is'employed to seal the joint between the threaded cup 12 and the-boss 13. a i

member 24, which is adapted to seat against Positioned within the passage17 is a tri- I angular stem 28, the lower end of which bears against the valve member 24, and the upper endagainst 'the head of a threaded stud 29.which passes through and is soldered to the diaphragm 16. The lower end of the stem 28 is cut away to form a cylinthe stem is such as not to interrupt the flow of gas from the high pressure chamber to the low pressurelchamber, being polygonal.

in cross-section and having its lower end reduced as above, described. The rounded edges of the stem which bear against the wall, of the passage are cut away as at 31 to re' duce the area of contact and thereby lessen the frictional resistance to the sliding of the stem. The upper end of the stem 28 slides in a centrally apertured boss 32' formed in tegrally with the body 10, and provided with a plurality of lateral openings 33 which of the rim and abevel 36 on the inner surface of the top 11. As before stated, the diaafi'ord communication'between the low prestion ofthe pressure regulator, recourse may phragm is provided at its center with a threaded stud 29, which is soldered in place. The head of this stud takes the pressure and wear caused by the stem 28, and its threaded portion, extending above the diaphragm, carries a circular plate 37, which transmits the pressure of the spring 38 to the diaphragm. The plate 37 is flat on its lower side, but is provided with a ridged chamfer or bevel on its upperedge by means of which it may be gripped by the fingers or a suitable tool. The upper end of the spring 38 is provided with a plate 39 against which an adjusting screw 40 is adapted to hear. The

screw 40'is provided with a handle and is threaded into the top 11 as shown.- For a detailed explanationof the operabe had to my Patent No. 1,488,007, above referred to. It is sufiicient here to state only that the spring 38 which presses downwardly upon the diaphragm'16, may be so adjusted that the valve 24 is opened by this sprlng against the action of the spring 26 when the pressure in the low pressure chamber falls below a certain degree, gas then flowing through the passage 17 to the low pressure chamber until the pressure in this chamber is againbuilt up. This diaphragm 16 is slightly concaved so as to operate above the plane of the rim or annular abutment 34,

and the centrally apertured boss 32 formed by the wall of the conduit 17 extending into the low pressure I'chamber serves as a guide for the stem 28, and as an abutment for preventingthe downward movement of the dia- 'phragm 16 below the lane of its supporting .abutment 34 under the influence of the spring 38, when the screw 40 is improperly adjusted. The sensitivity of the operation of the movable parts of the regulator, and the accuracy of the results obtained, are greatly increased by the modifications of esign of the stem, nozzle and valve carrying member above pointed out.

There are, of course, still other variations of design and arrangement of the component parts which will suggest themselves to one skilled in the art from the above disclosure, and such variations which do not involve modification or alteration of the essential features of my invention. are within the intent of theiappended claims.

Having thus described the invention, what is claimed as new and desired to be secured by U. S. Letters Patent is 1. In a pressure regulator, in combination,

I a low pressure chamber, one wall of which comprises an annular abutment, and the other wall of which comprises afiexible diaphragm, supported by said abutment and the end of the conduit, and a stem extending through said conduit for communicating the movements of the diaphragm to the'valve, the wall of said conduit extending into said low pressure chamber forming acentrally apertured boss which serves as a guide for the said stem within the low pressure chamber, and as an abutment for preventing the downward movement of the diaphragm below the plane of its supporting abutment.

2. In a pressure regulator, in combination, a low pressure chamber, Jone wall of which comprises an annular abutment, and the other wall of which comprises aflexible diaphragm supported by said abutment and adapted for operation above the plane of said abutment, a high pressure chamber, a

pressure chamber to prevent the downwardmovement of the diaphragm below the plane of said abutment and cut awayto provide aplurality of, transverse passages into said chamber, a valve member in the high pressure chamber adapted to close the end of said conduit and slida-bly engaging the walls of said chamber, and a stem extending through said conduit for communicating the movements of the diaphragm to the valve.

3. In a pressure regulator, in combination,

a low pressure chamber, onewall of which comprises a diaphragm, a.cylin drical high pressure chamber, a conduit connecting said chambers and provided with a seat in the high pressure chamber, a polygonal sliding valve member adapted to close said seat' and having its edges in sliding engagement with the cylindrical wall of said high pressure chamber, and a stem extending through said conduit for transmitting the movements of the diaphragm to the valve member, the edges of the polygonal valve member being cut away intermediate of its 4. In a pressur'e'regulator, in combination, a low pressure chamber, one wall of which comprises an annular abutment, and

the other wall of which comprises a flexible diaphragm mounted on said abutment for operation above the plane thereof, adjustable means for urging said diaphragm down 1 wardly. a highpressure chamber, a conduit connecting said chambers, a valve in the high pressure chamber adapted to close the end of said conduit. and a stem extending through said conduit for communicating the movements of the diaphragm to the valve, the wall of said conduit extending into said low pressure chamber, forming a centrally apertured boss, which serves as a guide for said stem and as an abutment to prevent the downward movement of the diaphragm below the plane of itssupporting abutment under the influence of said adjust able means.

5. In a pressure regulator, in combination, a low pressure'chamber, one wall of which comprises an annular abutment, and the other wall of which comprises a flexible diaphragm mounted on said abutment for operation above the plane thereof, adjustable means for urging said diaphragm downwardly, a high pressure chamber, a conduit connecting said chambers, a valve for closing said conduit, a stem for communicating the movements of the diaphragm to the valve, the wall of said conduit extending into said low pressure chamber forming an abutment for preventing the downward movement of the diaphragm below the plane of its supporting abutment under the influence of said adjustable means.

6. In a pressure regulator, in combination, a low pressure chamber, one wall of which comprises an annular abutment and the other wall of which comprises a flexible diaphragm mounted on said abutment and adapted for operation above the plane thereof, a spring for urging said diaphragm downwardly, a screw for adjusting the pres sure of said spring, a high pressure chamber, a conduit connecting said chambers, a valve in the high pressure chamber, adapted to close said conduit, a stem for communicating the movements of the diaphragm to the valve, and an abutment within said low pressure chamber for preventing the downward movement of said diaphragm below:

the plane of its supporting abutment due to improper adjustment of said, screw.

7. In a pressure regulator,in combination, a low pressure chamber, one wall of which comprises an annular abutment, and the other wall of which comprises aflexible diaphragm mounted on said abutment and adapted for operation above the plane thereof, adjustable means for urging said diaphragm downwardly, a high pressure chamber, a conduit connecting said chambers, a valve for closing said conduit, a stem for communicating the movements of the diaphragm to the valve, the Wall of said conduit being extended into the low pressure chamber for the greater part of its depth, forming a centrally apertured boss for preventing the downward movement of said diaphragm, below the .plane of its supporting abutment.

In testimonywhereof I hereunto aflix my signature.

ALEXANDER, F. JENKINS. 

